DOVER HARBOUR OF REFUGE. Mr. Walker has been making a personal inspection of the intended starting point of the western horn of the harbour of refuge, which will embrace a widening of the Stone Head. But a short time may be expected to elapse after the commencement of the works ere they will present efficient, accomodation for embarking and disembarking from the passage vessels, at all times and states of the tide.-Dover Chronicle. Patents Recently Granted. LIST OF ENGLISH PATENTS FOR THE WEEK Peter Britus Coxon, machinist, of Lenton, Nottingham, for a new method of mbossing, raising, and forining ornamental figures and designs on certain intertwined textile fabrics. Dated March 19th, 1847; six months. John Leslie, one of the tailors of her Majesty's Household, of Conduit-street, Hanover-square, for improvements in the combustion of gas for the purposes of light. Dated March 22nd, 1847; six months. Charles Fox, engineer, of Trafalgar-square, Charing-cross, for improvements in the permanent way of railways and carriages to be employed on railways. Dated March 23rd, 1847; six months(com). Morris Lyons, chemist, of Birmingham, and Wm. Millward, silver operator, of the same place, for certain improved alloys of metals, and improvements in the depositions of metals. Dated March 23rd, 1847; six months.. George Fergusson Wilson, gent., of Belmont, Vauxhall, for improvements in the production of light, and in the manufacture or preparation of materials applicable thereto. Dated March 23rd, 1847. William Henry Hatcher civil engineer, of the Strand, for improvements in electric telegraphs, and in apparatus connected therewith, and also in electric clocks and time-keepers. Dated March 23rd, 1847; six months. Francois Stanilaus Meldon, De Sussex, manufacturing chemist, of Millwall, for improvements in smelting copper and other ores. Dated March 23rd, 1847; six months. William Henry Kempton, gentleman. of Southstreet, Pentonville, for improvements in copying presses. Dated March 23rd, 1847; six months. William Bullock Tibbits, gentleman, of Braunston, for certain improvements in obtaining and applying motive power. Dated March 23rd, 1817; six months. Henry Smith, of the firm of Smith and Co., agricultural implement makers, of Stamford, for certain improvements in machinery for cutting and separating vegetable substances, also improvements in the construction of machines for dibbling and sowing seed, and distributing vegetable substances and manure over land; part of which improvements is applicable to wheel carriages in general. Dated March 23rd, 1347; six months. Henry Haycock, merchant, of Manchester, for certain improvements in rotary engines, to be worked by steam or other power, which said improvements are also applicable to raising or forcing fluids. Dated March 23rd, 1847; six months. William Bruce, barrister at law, of Essex Court, Temple, and of Flimstow, near Pembroke, for improvements in constructing piers, breakwaters, and other submarine works of stone. Dated March 25th, 1847; six months. Charles May, civil engineer, of Ipswich, Suffolk, for improvements in railway chairs, the fastenings to be used therewith, and in trenails. March 27th, 1847; six months. Dated John Henry Griesbach, of Carlton Villas, Maida Vale, for improvements in the construction of railways, and in engines and carriages to run thereon. Dated March 29th, le47; six months. Alexander Morton, of Morton-place, Kilmarnock, for improvements in printing warps. Dated March 29th, 1847; six months. John Fisher, mechanician, the younger, of Radford Works, Nottingham, for improvements in the manufacture of lace or weavings. Dated March 29th, 1847; six months. Samuel Hardacre, machinist, of Manchester, for certain improvements in machinery or apparatus for opening and for carding cotton and other fibrous substances, and for grinding the cards of carding engines-being partly a communication, Dated March 29th, 1847; six months. Henry Woodfall, paper maker, of Footscray, Kent, for certain improvements in paper-making machinery. Dated March 29th, 1847; six months. Samuel Millbourne, paper maker, of Saint Mary's, Cray. Kent, for improvements in the manufacture of paper. Dated March 29th, 1847; six months. [The above two patents being opposed at the Great Seal, were no sealed till the 29th March, but are dated the 3rd October, 1846, the day they would have been sealed had no opposition been entered by order of the Lord Chancellor.] Robert Jones, hot presser and finisher, of Wardour-street, Soho, for certain improvements in dressing or finishing goods or fabrics. Dated March 29th, 1847; six months. George Robert Skene, Esq., of Bedford, for improvements in making and refining infusions, and decoctions. Dated March 30th, 1847; six months. Patents Kecently Expired. John White, engineer, of Southampton, for certain improvements in machinery to be worked by steam or other power, applicable to raising water and to other purposes. Patent dated March 28th, 1833; expired March 2 th, 1847. Charles Terry, merchant, of London, for improvements in producing leather from hides, or skins. Patent dated March 28th, 1833; expired March 28th, 1847. John O. Rutter, of Lymington, wine merchant, for an improved process for generating heat, applicable to the heating of boilers and retorts, and to other purposes for which heat is required. Patent dated March 30th, 1833; expired March 30th, 1847.William Shilton, of Birmingham, machinist, for an improved apparatus or machine for cutting files and rasps. Patent dated April 3rd, 1833; expired April 3rd, 1847. Improvement in Horse Hoes. John Tattersall Cunliffe, 21, Church-street, Manches-Improved Picker for Power and William Abbey Burslem. Looms. Apparatus for Inhaling Ether, Nitrous Oxide, Chlorine, Steam, Naptha, Iodine, and other Volatile Substances, and for developing, receiving, or conducting Gases. Self regulating Lamp Spring Win-Hand Truck or Barrow. 23. Roman-road, Old Ford, Safety Envelope Lace Wafer Middlesex. Jeseph Fenn, Tool Maker Newgate-street Improved Wrench. Commerce-street, Glasgow..Cane Punt. Bloomsbury-place, Wolver-Double Safety Lock. 22 1006 39 1007 Naylor, Makers. D. Cook and Co.... Commercial-road, East.... chell. 1014 26 1015 Samuel Beddoes and Birmingham.. Samuel Twist 27 Bristol, Manchester, 1013 William Markwick Mit-Ufston-road, Kingsland 1019 Charles White, George 66, Back Church-lane, White-Capstan. 31 Windlass. Improved Purifying Gas Burner. Balance Handle for Knives and Forks. NOTICES TO CORRESPONDENTS. ENLARGEMENT OF THE PATENT JOURNAL.-We may announce that on the 17th inst. the Patent Journal will be enlarged. J. P.-There is no Patent granted of the kind. ATMOSPHERIC RAILWAY at St. Germains.-We were wrong in saying last week that it was Hallette's system in use at this railway. We are informed that it is Clegg and Samuda's system, and that it works very satisfactorily, frequently attaining a speed of 35 miles an hour, with 40 tons of luggage, gradients 1 in 29. Edited and Published by the Proprietors, CHARLES BARLOW and PHILIP LE CAPELAIN, of the Patent Office, 89 and 36, Chancery-Lane, at 89, Chancery-Lane, and printed for them at H. SILVERLOCK's Steam Press, 3, Wardrobe-terrace, Doctors' Commons, London. No. 46.] AND INVENTORS' MAGAZINE. SATURDAY, APRIL 10, 1847. [PRICE 3D. COCHRAN'S IMPROVEMENTS IN CUTTING WOOD FOR SHIP-BUILDING. Specifications of Patents recently Enrolled. JOHN WEBSTER COCHRAN, of Paris, engineer, for certain Improvements in Machinery for cutting and shaping wood for ship-building, and other purposes. Patent dated June 2nd, 1846. Enrolled, Dec. 2nd, 1846. THIS invention relates to certain improved apparatus or machinery for cutting or sawing straight or curved timbers, used for shipbuilding and other purposes, and which is represented in vertical section in our front cut, with a log of wood mounted therein. Fig. 2, is a plan or bird's-eye view of this vertical saw-machine or mill, in working order, and as it would appear if viewed from above and having mounted thereon a crooked log of wood, which has been cut by means of a mill or machine, according to this invention. Two longitudinal rail-plates, a,a, of the usual description, having V edges on their upper sides are securely fixed upon the horizontal longitudinal sills or beams of the framing, and upon the V edges of which rail-plates the sliding carriage is to move in the usual way for the purpose of advancing any piece of wood which it may carry up to the saw or saws, in order that it may be cut into the required shape or shapes. The sliding carriage (in or upon which is to be placed any log or piece of wood intended to be cut) consists of two longitudinal bars, B,B, figs. 1, 2, (which form the base of the carriage) placed parallel to each other and braced together into the form of a rectangular frame by the transverse rod, b, and the head block, or plate, C,C. The under sides of the longitudinal bars B,B, have each a longitudinal groove extending the whole length of the carriage and fitted to the V edges of the rail plates, a,a, so that the carriage may slide easily and securely along in the ordinary way. There are also on the under sides of the longitudinal bars, B,B, two-toothed racks (shewn in fig. 1, and in dotted lines in fig. 2), extending along the whole length of the carriage. These racks are placed adjoining to and parallel with the grooves before-mentioned, and so that a pair of pinions, h1,h1, may (when a piece of timber is to be cut) move the carriage along upon the rail-plates a,a, by means of trains of wheels connected with the pinions (seen in dotted lines in fig. 1), and when the piece of timber has been cut the machinery may be thrown out of gear and the sliding carriage moved back by any of the well-known means. The sliding carriage is kept down in its proper position by two friction-rollers h2,h2, one on each side, and those rollers have their edges fitted to the V rails, which run along the upper sides of the sliding carriage, as hereinafter mentioned; each of these rollers is attached to the inside of one of the standards or fender posts, J,J, (within which the saw-gate works) immediately above the sliding-carriage as shewn. Upon the head block, C,C, is mounted the poppet-head, c,c, which is made capable of being moved laterally in a dove-tailed groove, for the purposes of adjustment. In this poppet-head is an axle, which carries the chuck-plate, D, and this chuck-plate is made capable of turning freely upon its axis. This chuck-plate has a dove-tailed groove extending across the face of it, and having fitted into it the foot of the jaws or clips, d,d, the lower of which is made fixed and the other moveable. The moveable jaw is kept in its place by two bolts, h,h, and by a nut upon one of these bolts it may be screwed towards the other saw, for the purpose of holding one end of a log of wood or piece of timber firmly in the carriage; and the lower or fixed jaw or clip must be mounted in such a way that the inner surface thereof will at all times coincide with an imaginary line drawn across the face of the chuck-plate, D, and through the centre of the axis thereof. These jaws or clips may by means of the screw-shaft, g, be moved across the face of the chuck plate in either direction, as may be required for the purpose of balancing a log or piece of wood, which is to be held between the chuck-plates whilst it is being cut. The head block, E,E, is mounted upon the side bars, B,B, of the sliding-carriage. Along the tops of the side bars, B,B, are V edges, and under and across the ends of the head block, E,E, are grooves to receive the said last-mentioned V edges, so that the head block, E,E, when placed across the sliding-carriage with its grooves upon the same V edges, may slide easily along above or upon the tops of the sliding carriage, in the direction which may be required for the purpose of adjustment according to the length of the log or piece of timber to be cut. The head block, E,E, has motion given to it (along the carriage) by means of a pair of pinions, which are fixed upon a transverse shaft under the head block (as seen in dotted lines in fig. 2, but as best seen in fig. 1), and which serve the purpose of keeping the head block down in its proper position on the ca.riage. This transverse shaft forms the axis of each of the said last-mentioned pinions, and the bearings of the snaft (in which it is made to turn by means of a hand wheel, handle, or other convenient means), are fastened to the under side of the head block, E,E. The last-mentioned pinions are place in such a position that the teeth of these pinions take into the teeth of the toothedrack, which is placed upon the under sides of the longitudinal bars, B,B, as before-mentioned, and as the pinions are turned round in the one direction or the other, the heads |